Event Horizon Telescope
The Event Horizon Telescope (EHT) is a global, Earth‑sized very long baseline interferometry array operating primarily at 230 GHz that produced the first direct images of black hole shadows. Its landmark results include images of the supermassive black holes M87* in 2019 and Sagittarius A* in 2022, followed by polarized-light maps revealing magnetic fields near the event horizon.
